Yes, both Slack and Jet Leads offer a Free Trial.
Slack is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Jet Leads is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Slack Starts at $2.67/Month whereas for Jet Leads Starts at $3,599/Month.
Some top alternatives to Slack includes Microsoft Teams, Glip, Google Chat, ChatWork, Dialog, Office Chat, imBee, Takle, SPACE Channel and Teamwork Chat.
Some top alternatives to Jet Leads includes Leadfeeder, Miraget, Anyleads, FuzeLead, Leadflare, Lead Engines, B2B Salesfuel, LeadMine, LeadSift, Conversion Blitz and Linkedojet.